Nasal and laryngeal snare



Dec. 1924; 1,517,787

E. LANGBEIN NASAL AND LARYNGEAL SNARE Filed July 9, 1921 8% d, gg l gmu[A EEJEIN Patented Dec. 2, 1924.

EDWARD LANGBEIN, 013 BROOKLYN, NEW YORK.

NASflL AND LARYNGEAL SNARE.

Application filed July 9, 1921.

To all whom it may concern:

Be it known that Enwnnn LANonniN, citizen of the United States, residingat Ridgewood Avenue, Brooklyn, in the county of Kings and State of NewYork, has invented certain new and useful improvements in Nasal andLaryngeal Snares, of which the following is a specification.

My invention relates to nasal and laryn geal snares, wherein it isdesigned for use by a surgeon when it is desired to perform suchoperations on the nose or in the throat.

The prime object of my invention is to provide an instrument that may beheld in a perfectly normal manner, and obtain therefrom the bestperformance by the proper manipulation of its parts, while it is beingheld in a steady position. This can only be done when the design is suchthat the implement may be held not only steady, but at the same timefirmly, which is one of the principal requisites when performing anoperation. Accordingly it will be seen that the handle of my instrumentis capable of being held as steady as possible, yet leaving the index ortrigger finger free to act upon the trigger in a normal manner, whichdoes not in any way throw the instrument out of the desired alignmentwhile it is being operated.

With the improved snare a surgeon may perform an operation on the noseor throat with the greatest ease, and with no danger of the snaredropping out of alignment while being operated as is the case with. thesnares now on the market.

With these and other objects in view, the improvement consists in theconstruction, combination and arrangement of the parts, as will behereinafter more fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereto appended.

The invention as at present preferred will be more clearly understood byreference to the drawing which illustrates merely an example of meansfor putting my im provement into practice, and wherein: Figure 1 is aside View of my improved snare, and Figure 2 shows the most secure andpositive manner in which the instrument may be held and manipulated.

The same reference characters will refer to the same parts on theseveral figures. Referring now to Figure 1, the rod 3 is at tached to aratchet extension 4, which ter- Serial No. 483,494.

inmates in a knob 5. The rod 3 and ratchet are housed within a suitableencasement, which for convenience is made in two parts, the front part6, being of suiiicient diameter to permit the rod 3 and the snare thatmay be attached to the end within the holes 7 and 8, to be pulled by theratchet within the tube 6. The snare is adjusted over the parts to besevered and then drawn taut by the hand. Then by operating the triggeras will be presently described, the snare is gradually tightened aboutthe part, and as the operator continues to operate the trigger it notonly cuts the parts so surrounded, but by the gradually increasingtension, causes the small veins within those parts to become contracted,and closed, some of which do not have to be acted upon by the surgeon.

The rear part of the encasement or housing 9, about the ratchet on itsupper side may be provided with a spring lock 10, having a downwardlyextending finger, 11. the operation of which will be explained furtheron, and a lower ratchet engaging finger 12. From the under side of thehousing 9 extends a part 13, to which the handle 14: may be secured,said extension carrying all the coacting parts that co-operate with theratchet. A lever 15 is hinged at 16, and to its upper end being suitablyhinged a pawl 17, the latter is held in operative position by a spring18. The pawl 17 may be provided with an outwardly extending pin 19 whichmay extend in the path of the finger 11, so that when it is desired toreturn the ratchet forward or to its co-operative position, by pressingsaid spring 10, downwardly the finger 12 is released from contact withthe ratchets, and the finger 11, presses down on the stud 19 which inturn causes the pawl 17 to be released from the teeth of the ratchet,and thereby permits the operator to shove the parts back into theposition shown in Figure 1.

To the opposite end of the lever 15 may be suitably hinged at 20, a link21, the latter extending through a slot (not shown) in the extension 13,and at its opposite end 222, it may be secured to the upper end of asuitably designed spring pressed trigger 23, the latter being providedwith a trigger finger hold 241-. The trigger may be suitably hinged tothe extension 13 by an arm 25, extending within the said extension andheld operatively secured by screw 26,

and the spring 27 causes the trigger to as sume its operative positionat all times while the rearward movement of the lever 15 is limited bythe stop 28.

From the above description it will be seen that my snare has everyconvenience for holding it not only convenient and secure, but affordsevery facility for holding it absolutely steadywhile it is beingoperated. It diilers from other snares in that the ratchet is propelledby means of a spring pressed finger trigger situated anteriorly. Withthe trigger so located and operated. it allows the operator to grasp theinstrument with merely the second, third and fourth fingers and thumb,and yet insure absolute control, and make it possible to operate theratchet with the index finger, or trigger finger only. Vith reference tothe above, Figure 2 will show with what force and effect an operator mayhold and operate the device, the parts being designed so as to enablethe instrument to be held absolutely steady while performing theoperation, as had been noted, and at the same time enable the surgeon toexert all possible pressure on the operating parts to accomplish thedesired purpose.

I am aware that snares have been in use for some time but their mannerof holding and operation are such as to cause the operator everyapprehension till his operation has been completed, on account oi thelocation and arrangement of the operating parts. My improvement has alsothe advantage over all instruments of similar construction in that allmovement of the distal end of the canula is eliminated; thus atfordingthe operator precision in executing operations upon delicate and vitalstructures, as has been noted.

In accordance with the provisions of the Patent Statutes, I have hereindescribed the principal form of my invention which I now consider torepresent the best embodiment thereof, but I desire to have itunderstood that the herein described form is only illustrative and thatthe invention can be carried out in other ways than that described, butall are intended to come with r in the scope of the claims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. A surgical snare operating device comprising a tubular body part, asnare carrying rod slidable in said body part and having ratchet teethon its rear end portion, a spring latch mounted, exteriorly on thetubular body partand normally urged against said ratchet teeth to holdthe rod from outward movement, a handle rigidly carried by the body partand having a handhold at its lower end adapted to be grasped firmly inthe hand for firmly holding the body portion in position of use, a pawlon the body part for engagement with the ratchet teeth to advance therod rearuuirdly in the body part, and an operating trigger shorter thanthe handle connected to the pawl and pivoted on the upper end of thehandle above the handhold for operation by the index finger of the handwithout relaxing the grip upon the handle.

2. A surgical snare operating device comprising a tubular body part, a.snare carry ing rod slidably mounted in the body part and having ratchetteeth upon its inner end, a handle rigidly mounted on the body part andhaving a handhold at its lower end adapted, to be grasped in the handfor holding the body part in position for use. a pawl pivotally mountedon the inner end oi? the handle in position to engage said ratchetteeth, a trigger pivoted on the upper portion of the handle above'thehandheld, a link connecting the trigger to said pawl l'or oscillatingthe latter to retract said rod in the body part, and a spring latchmounted upon the body part and i'lormallv urged against said ratchetteeth for holding the rod from moving outwardly, said spring latch beingdisposed exteriorly upon the body part in position for directcompression to release said rod.

In testimony whereof I ailix my signature.

EDWARD LANGBETN.

